What is CVE-2025-21075?

CVE-2025-21075 is a medium-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 4.3/10. Published 2025-11-05.

How severe is CVE-2025-21075?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Buffer overflow in Samsung Android

CVE-2025-21075

Out-of-bounds write in libimagecodec.quram.so prior to SMR Nov-2025 Release 1 allows remote attackers to access out-of-bounds memory.

Vulnerability class: Buffer Overflow

Published 2025-11-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Samsung Android — versions 13.0, 14.0, 15.0
Samsung Mobile Devices — versions SMR Nov-2025 Release in Android 13, 14, 15, 16

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2025-21075?: CVE-2025-21075 is a medium-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 4.3/10. Published 2025-11-05.
How severe is CVE-2025-21075?: Medium severity. CVSS v3 base score is 4.3 out of 10.